Disallow something for super role and use of super role

There is Administrators role. How do I disallow them for example from seing a certain screen? Disallow doesn’t work… And what’s the use of “super” role type and what happens if I change Administrators’ role type from super to standard, besides the fact that I’ll supposedly be able to hide a screen from Admin?

“Super” type in a role is a kind of shortcut to quickly give all permissions regardless of any restrictions set up for the role. So if you change the Administrators role to Standard, you can restrict something for it. Otherwise any restrictions have no effect.